1. The W209 Pro V11 battery activation board is equipped with 28 original sockets, supporting 2A high-current charging for iPhone 11-17 batteries, compatible with all Android series batteries, and includes an added socket for Watch acoustic series batteries. 2. Auto light indication switching when fully charged; Automatic power cutoff upon full charge. 3. Automatic polarity recognition; supports 7.4V high-voltage battery activation and charging. 4. Dual LED display: Enables real-time monitoring of voltage and current changes for enhanced convenience and intuitive operation. 5. Multi-layer protection: Includes charging status indication, high-current overload/load protection, full-circuit reverse connection protection, battery short-circuit protection, and voltage detection. 6. 5-9V adaptive voltage with auto-matching battery protocols.